How to Install Spotlights on Your Vehicle: 15 Steps To install spotlights on your vehicle, begin by disconnecting your car battery at the negative terminal. Mount the relay inside the engine bay with heavy duty double sided tape or by drilling holes through the metal.79%(161)Views: 195K Downlights to lamp & switch wiring . Spotlights - YouTube Click to view on Bing6:27How to connect downlights to a ceiling rose and switch video.Author: How2D2Views: 187K Install downlights | Light fitting Install downlights . Downlights and recessed spotlights are now becoming increasingly popular. These two wires need terminating into a suitable connector and then the down light needs wiring into this also. You will notice that these wires are the old colours. Red Wiring up 6 x 240v 50w spotlights | DIYnot Forums I have made a quick diagram up on how I was looking to wire up the new spotlights. The only reason for the 1 daisy chain from the top right is because the junction box only has 4 terminals, otherwise I would have done each from the junction box as done on the left. Light wiring diagram - Everything you need to know about Light wiring diagram If you need to know how to fix or modify a lighting circuit, you’re in the right place. We have and extensive collection of common lighting arrangements with detailed lighting circuit diagrams, light wiring diagrams and a breakdown of all the components used in lighting circuits. negative switching lights. How to wire up driving lights It a basic headlight wiring up grade and you don’t need to know whether the vehicle is positive or negative switched, the wiring sorts it out automatically. One thing I would change is the cable between the battery and the fuse block, this should be at least 6mm to give the best results.